Fast cure Pipe repair Bandages
Single Component Polyurethane Pipe Repair Bandage
200PRT is a high performance rapid curing moisture activated repair bandage, specifically developed for the repair of leaking pipes.
200PRT is based on a specially selected woven polyester fabric impregnated with a polyurethane resin, which is activated by immersion in water. 200PRT is ideal for pipe repairs to low pressure systems. As a general guide a repair built up to a thickness of approximately 12mm (1⁄2 inch) will withstand a maximum service pressure of 10 bar (150psi).
High pressures repairs, up to 50 bar can be achieved by first applying a ‘plug’ of ProTXcoat Stick over the leak.
Pipes up to a nominal diameter of 65mm may be repaired using 200PRT with holes approximately 3-6mm diameter, although slightly larger pipes and holes can be effectively repaired using a plug of putty as described herein, always at users discretion.
Heavy contamination due to oil or grease must first be removed using MEK (Methyl Ethyl Ketone)
Surfaces should then be abrasive blast cleaned to a minimum Sa21⁄2 – Sa3 BS7079 Part A1 : 1989 or equivalent with a blast profile of 75 – 125 microns corresponding to ‘Rough’ in ISO 8503/1. All loose abrasive dust and debris must be blown clear or vacuum cleaned away.
Equipment that has been salt impregnated due to service conditions should first be wet blasted then dry abrasive blasted and checked for presence of salts, this process should be repeated until the salts are removed.
Alternatively, surfaces should be warmed with a blow torch or similar to bring salts up to the surface. The surface should once again be blast cleaned. This procedure must be repeated until no further sweating of impregnated salt is evident.
Before and during application, lightweight disposable gloves should be worn to protect the hands.
200PRT is a single component material, which should be immersed in water and squeezed two or three times for about five seconds prior to use.
Remove roll from water and wrap quickly and tightly as follows.
Centre tape over leak site, wrap from bottom of roll, pulling firmly throughout application. After 5-7 plies, resin foam will come through the tape, which is desirable and aided by pulling tightly. Continue until entire roll is applied, building to a minimum thickness of 1⁄2 inch (12 mm), use a second roll if necessary. Firmly press and smooth end of roll into wrap in the direction of application. Wet gloves in water, smooth and firmly press the wet resin back into the wrap.
When used in conjunction with a plug of ProTXcoat Stick, repeat the above instructions but having first plugged the hole. Knead a small bead of putty in a gloved hand and flatten out into a disc centrally over the hole pressing gently and feathering out the edges. Leave to semi-harden (full cure 30 minutes) before applying the tape, although the tape may be applied immediately if necessary.
KEEP HANDS MOVING QUICKLY, AND WET GLOVES FREQUENTLY TO AVOID STICKING.
Continue rapid hand movement pressing and polishing resin in motions around and parallel to the pipe. Continue process until resins are no longer tacky. The repair should now have a smooth, hard surface and an enamel-like appearance with no fabric protruding through the surface.
NOTE: If a thicker application is needed, spend a little less time mfinishing the first roll and immediately begin the application of the next. Finish the final roll as if a single roll application. Detailed working recommendations are available from the Technical Centre on request
|Mixing Ratio||Supplied ready for use.|
|Appearance||Resin impregnated bandage.|
|Drying & Cure Times at 20°C (68°F)||Usable Life||2-3 minutes|
|Initial Set||5 minutes|
|Full Mechanical||30 minutes|
|Shelf Life||Use within 1 year of purchase. Store in original sealed containers at|
temperatures between 5°C (40°F) and 30°C (86°F).
|Temperature Resistance||Dry Heat||270°C|
Flexural Strength 32 N/mm2 (4640 psi) ASTM D790
Tensile Strength 19 N/mm2 (2755 psi) ASTMD6382
Hardness (Shore D) 82 ASTMD2240
Adhesion (Bond Strength) 14 N/mm2 (2000 psi)
Maximum Heat Resistance 270°C (500°F)
Maximum Service Pressure
(1⁄2 inch/12 mm thick repair) 10 bar (150 psi)
(1 inch/25 mm thick repair) 27.5 bar (400 psi)
Health and safety
As long as normal good practice is observed 200PRT can be safely used.
Protective gloves should be worn during use.
A fully detailed Safety Data Sheet is either included with the material or is available on request.
Supplied in 50mm x 1.8mtr, 50mm x 3.6mtr, 75mm x 3.6mtr, 100mm x 3.6mtr.
The information provided in this Product Data Sheet is intended as a general guide only and should not be used for specification purposes. The information is given in good faith but we assume no responsibility for the use made of the product or this information because this is outside the control of the company. Users should determine the suitability of the product for their own particular purposes by their own tests.